Paper-feeding mechanism



L. JENSEN.

PAPER FEEDING MECHANISM.

RPPLICATION F ILED JUNE 3,192].

Patented Feb. 21, 1922.

3 SHEETSSHEET 1.

"L. JENSEN.

PAPER FEEDING MECHANISM.

APPLICATION FILED JUNE 3,192I.

Patented Feb. 212, 1922.

LO'l -s 3 SHEETS-SHEET Z.

IIIIIIIIIIIII I L. JENSEN.

PAPER FEEDING MECHANISM.

APPLICATION FILED JUNE 3, E921.

Patented Feb. 21, 1922.

3 SHEETS-SHEET 3- LOUIS JENSEN, OF CHICAGO, ILLINOIS, ASSIGNOR' TO UNI'IQED AUTOGRAPHIC REGISTER 00., OF CHICAGO, ILLINOIS,

A CORPORATION OF ILLINOIS.

PAPER-FEEDING MECHANISM.

Specification of Letters Patent.

Patented Feb. 21., 1922.

Application filed June 3, 1921. Serial No. 474,630.

To all whom it may concern:

Be it known that 1, Louis JENSEN, a citizen of the United States of America, and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Paper-Feeding Mechanism, of which the following is a specification.

This invention relates to paper feeding mechanism for typewriting machines which are intendedfor writing uponperforated paper record strips, the perforations on the strips being in pairs spaced apart at regular predetermined lengths of the strips according to the printed forms thereon. The object of the invention is to maintain correct registration between the forms on the paper. This object is accomplished by the use of two pairs of ooacting feed rollers for acting upon the paper web along lines passing lengthwise along the paper through the per- 'be started in motion.

The purposes of the invention are accomplished by a device such as illustrated in the drawings, in which Figure 1 is a plan View partly broken away of a typewriting machine with the improved paper feeding mechanism applied thereto.

Fig. 2 is a detail in front elevation of the paper feeding mechanism.

Fig. 3 shows the paper feeding mechanism and the upper part of the typewriter in side elevation.

4 is a sectional detail taken on the line i-et of Fig. 2.

Fig. 5 is a detail in front elevation and partly in section of the paper feeding mechanism. 7

Fig. '6 is a sectional detail taken on the line 6-6 of Fig. 5.

Fig. 7 is a sectional detail of one of the pair of paper feeding rollers.

Fig. 8 is a sectional view of the central pair of rollers,

fast to these shafts.

The present design of paper feeding mechanism for, typewriting machines is intended for simultaneously feeding a plural- 1ty of paper record strips such as are employed for making out bills of lading and for this reason are provided with printed forms and a. pair of post holes or perforations for each form for convenience in filing. Heretofore typewriting machines have been used in conjunction with autographic registers for typewriting the forms on these continuous record strips. In the arrangement shown in the present design, the paper is passed over the platen of a typewriting machine, but the platen is preferably fixed on its carriage. The webs of paper pass from the supply rolls over guide rollers on the paper carriage and are drawn over the platen by means of coaoting pairs of feed rollers carried by a pair of rotatable shafts. The shafts are geared together to rotate in opposite directions and receive motion from the usual line spacingmechanism of the typewriting machine or from a manually operated wheel fixed to one end of one of the shafts. The coacting feed rollers are arranged in three pairs, a central pair of which is normally inoperative due to the fact that its complementary roller is normally offset therefrom. The remaining two pairs of rollers are respectively spaced laterally from each side of the central pair of rollers and are always in coacting relationship. These side= pairs of rollers are so located that during the feed of the paper a pair of perforations on each form of the printed webs will successively arrive between said rollers, at which time the feeding of the paper stops, until the central pair are brought into coaoting relationship. The advantage of this arrangement is that corre'ct registration maybe maintained.

Referring to the drawings, the frame 1 of the typewriting machine is shown supporting the carriage 2 on the usual tracks 3. The carriage 2 has provision for supporting a plurality of rolls of paper webs, not shown, but the paper 4 from these rolls passes over guide rollers 5 and through guide 6 and thence upwardly past a platen fixed to the carriage 2. Above the platen are a pair of feed roller shafts 7 and 8 which are geared together by the gears 9 and 10 Shaft 7 receives motion through a ratchet 11 coacting with a feed pawl 12 which has imparted to it an oscillating motion by the line spacing lever 13, or by means of the knurled wheel 14 fast to the end of the shaft. Rotatable with shaft 7 is a sleeve 15 which carries the paper feed rollers 16 and 17. Sleeve 15 is centrally slotted at 18 to receive a pin 19 by means of which a feed roller 20 is secured to shaft 7. The shaft 7 is shiftable lengthwise of the sleeve 15 for moving the feed roller 20 into and out of cooperative relation with the central feed roller 21 fast to shaft 8.' In addition to the feed roller 21 the shaft 8 is provided with feed rollers 22 and 23 for respectively coacting with the feed rollers 16 and 17 on shaft 7. When the pair of shafts 7 and 8 are rotated sufficiently to feed the paper the length of a single form, perforations arrive between the rollers 16, 22, and 17, 23 and the feed will momentarily stop irrespective of any continued rotation of these shafts, until the central feed roller 20 is shifted into cooperative relation with the roller 21. This shifting 'of the central roller can only be effected when the flat portion 24 thereof is adjacent the roller 21, due to the locking,

effect ofcollar 25 on the sleeve 15, except when a pin 26 on shaft 7 arrives opposite the notch 27 in the collar. This notch is so formed that after the pin has entered the same, the continuedrotation of shaft 7 will cause. the pin to travel outwardly along one a new supply of record pa er between the feed rollers, the shafts 7 an 8 are separated by rocking the shaft 32 which carries pins 33 foren aging bell crank levers 34 loose on shaft but having cam edges 35 for engaging shaft 8'and forcing it away from the shaft 7.-

In the operation of the device the paperfis fed as desired by rotating wheel 14 or by means of the line spacing-le'ver13, either one of which devices will cause the pairs of feeding rolls 16, '22 and 17, 23 to feed the paper until the next pair of perforations become centered between these rollers. If

one perforation of a pair arrives between its pair of rollers in advance of the other, as

might occur if the paper was fed more rapidl-y on one side than the other, the remaining pair of rollers might continue to feed acting friction until the paper is again straightened out. When a pair of perforations arrives between these feed rollers, the stopping of the paper'advises the operator of the fact that the portion of the record paper which has been written upon is in position to be torn off. This can be effected by. means of a knife, not shown, but which may be supported by the frame members 36. To again start the record paper in motion, it is necessary to push inwardly on shaft 7 by means of head 14 to bring the roller 20 into 003.0!- ing relation with the roller 21.

Although but one specific embodiment of this invention is herein shown and described it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of thisinvention as defined by the following claims.

I claim: 7

1. In a typewriting machine for printing on strips of paper having printed forms of predetermined length, each of which have corresponding post holes adjacent their advance edges, a paper feeding mechanism comprising a pair of coacting friction feed rollers positioned to engage the paper .in line with said post holes, and means for movin said strips forward after said post holes Iiave been engaged by said friction rollers. v

2. In a typewriting machine for printing on strips of paper having printed forms of predetermined length, each of which have corresponding post holes adjacent their advanb'e edges, a paper feeding mechanism comprising two pairs of laterally spaced coacting friction feed rollers, said rollers being positioned to engage the paper along lines passing through said post holes, and means for moving said strips forward after said post holes have been engaged by said friction rollers. I

. 3. J11 a typewriting machine for printing on strips of paper having printed forms of predetermined length, each of which have corresponding post holes adjacent their advance edges, a paper feeding mechanism comprising two pairs of laterally spaced coacting friction feed rollers, said rollers being positioned to engage the paper along lines passing "through said'post holes, a central pair of rollers, one of which is shiftable into and out of engagement with the remaining roller.

4. In a typewriting machine for printing on strips of paper having printed forms of predetermined length, each of which have corresponding post holes adjacent their ad vance edges, a paper feeding mechanismcomprising two Ipairs of laterally spaced coeed rollers, said rollers being positioned to engage the pa er along lines passing through said post ho es, a central pair ofrollers, one of which is laterally shiftable into and out of engagement with the remaining roller. v

.5. In a typewriting machine for printing on strips of paper having printed forms of predetermined length, each of which have corresponding post holes adjacent their advance edges, a paper feeding mechanism comprising two pairs of laterally spaced coacting friction feed rollers, said rollers being positioned to engage the paper along lines passing through sald post holes, a central pair of rollers, one of which is shiftable into and out of engagement with the remaining roller, said shiftable roller having a flat surface on a portion of its periphery.

6. In a typewriting machine for printing on strips of paper having printed forms of predetermined length, each of which have corresponding post holes adjacent their, advance edges, 21- paper feeding mechanism comprising two pairs of laterally spaced coacting friction feed rollers, said rollers being positioned to engage the paper along lines passing through said post holes, a central pair of rollers, one of which is shiftable into and out of engagement with the remaining roller, said shiftable roller having a flat surface on a portion of its periphery,-

determined lengths of a continuous strip of paper therefrom, and friction devices" that periodically engage said strip to start the feeding movement of said paper after each stoppage.

In witness whereof I have hereunto set my hand this 7th day of May, 1921.

LOUIS JENSEN.

Witnesses:

W. R. BARKER, LEWIS BARKER. 

